All subconns are in TransientFail

Alpha’s error log is always printed.Filled up my disk

That means alphas are not able to communicate with each other.
Could you share how you are booting up dgraph cluster? any docker-compose files or any configuration, steps you follow to start the cluster would be very helpful.

alpha server(#.#.#.13)

dgraph alpha --idx 200 --port_offset 2200 --lru_mb 1024 --my #.#.#.13:7280 --zero ##.##.##.13:7180 --postings ../data/p --wal ../data/w

alpha server(##.##.##.159)

dgraph alpha --idx 201 --port_offset 2200 --lru_mb 1024 --my ##.##.##.159:7280 --zero ##.##.##.159:7180 --postings ../data/p --wal ../data/w

alpha server( ##.##.##.34)

dgraph alpha --idx 203 --port_offset 2200 --lru_mb 1024 --my ##.##.##.34:7280 --zero ##.##.##.34:7180 --postings ../data/p --wal ../data/w 

Now the zero cluster has been started, which includes three zero nodes (13:7180, 159:7180, 34:7180)

All your Alphas seem to be on different IPs.
Are you running them on separate hosts? Could you confirm that you are able to ping one host from the other?